Add note for zero value on KDF rpcport config param

Author: smk762

src/pages/komodo-defi-framework/setup/configure-mm2-json/index.mdx

@@ -20,7 +20,7 @@ When running the Komodo DeFi API via commandline with the `kdf` binary, some bas
 | allow\_weak\_password        | boolean         | Optional, defaults to `false`. If `true`, will allow low entropy rpc\_password. If `false` rpc\_password must not have 3 of the same characters in a row, must be between 8-32 characters in length, must contain at least one of each of the following: numeric, uppercase, lowercase, special character (e.g. !#$\*). It also can not contain the word "password", or the chars `<`, `>`, or `&`.                                   |
 | dbdir                        | string          | Optional, defaults to a subfolder named `DB` in the path of your `kdf` binary. This path will store the Komodo DeFi-API database data.                                                                                                                                                                                                                                                                                                |
 | rpcip                        | string          | Optional, defaults to `127.0.0.1`. IP address to bind to for RPC server.                                                                                                                                                                                                                                                                                                                                                              |
-| rpcport                      | integer         | Optional, defaults to `7783`. Port to use for RPC communication.                                                                                                                                                                                                                                                                                                                                                                      |
+| rpcport                      | integer         | Optional, defaults to `7783`. Port to use for RPC communication. If set to `0`, an available port will be chosen randomly.                                                                                                                                                                                                                                                                                                                                                                      |
 | rpc\_local\_only             | boolean         | Optional, defaults to `true`. If `false` the Komodo DeFi Framework API will allow rpc methods sent from external IP addresses. **Warning:** Only use this if you know what you are doing, and have put the appropriate security measures in place.                                                                                                                                                                                    |
 | i\_am\_seed                  | boolean         | Optional, defaults to `false`. Runs Komodo DeFi Framework API as a seed node mode (acting as a relay for Komodo DeFi Framework API clients). Use of this mode is not reccomended on the main network (8762) as it could result in a pubkey ban if non-compliant. On alternative testing or private networks, at least one seed node is required to relay information to other Komodo DeFi Framework API clients using the same netID. |
 | seednodes                    | list of strings | Optional. If operating on a test or private netID, the IP address of at least one seed node is required (on the main network, these are already hardcoded)                                                                                                                                                                                                                                                                            |